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3 Sheets-Sheet 1.

(No Model.)

W. E. BROWN.

WELL DRILLING MACHINE.

' No. 310,875. Patented Jan. 20,1885.

W/ T/VE55E5 VEN THE N. PETERS. Phow Llllmgmplurr. Whhinglnll. D c.

(No Model.) '3 Sheets-She et 3,

W. E. BROWN.

WELL DRILLING MACHINE.

No. 310,875.. Patented Jan. 20,1885.

Warren Sraras Paranr @r'rrcn.

\VILLIAM E. BROWVN, OF ELBBIDGE, NEW YORK.

WELL-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 810,875, dated January 20, 1885.

Application filed May 3, 1884. (No model.)

To aZZ whom it may concern..-

Be it .known that I, WILLIAM E. BROWN, of Elbridge, in'the county of Onondaga, in the State of New York, have invented new and useful Improvements in lVelLDrilling Machines, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates more particularly to the well-drilling machine for which I have obtained Letters Patent No. 291,837; and it consists, first, in an improved arrangement of two cams bearing on the lever respectively at 0pposite sides of the sheave over which the drillrope passes, said arrangement of the cams in relation to the lever obviating undue. lateral strain on the lever, and rendering the machine more durable and more efficient.

It consists, secondly, in improved devices for stopping the action of the drill by holding out of the way of the earns the lever which carries the sheave over which the drillrope passes; and it further consists in improved means for letting out the drill-rope when re quired tolower the drill, all as hereinafter more fully explained, and specifically set forth in the claims.

In the accompanying drawings, Figure 1 is a side view of my improved well-drilling machine, with its parts placed in position for transportation. Fig. 2 is a view of the opposite side of the machine, showing it in its operative position. Fig. 8 is a detail view of the drill-dropping lever, showing its relation to the rope-drum and cams. Fig. 4 is an enlarged detail view of the device for controlling the movement of the drill-rope shaft in the operation of letting out the rope. Fig. 5 is a plan view of the machine, taken on line or m, with the braces removed to better illustrate the mechanism; and Fig. 6 is a front elevation of the machine.

Similar letters of reference indicate corresponding parts.

A represents thebase of the machine, mounted in the form of a horizontal frame onasuitable truck or vehicle to render the machine portable.

To each end of the base A is secured an upright frame, B B, sustained by braces G 0, running from the rear end of the base to the upper part of the forward frame, 13, and by girders D D, extended from the central portion of the braces G to the posts of the aforesaid frames, said braces and girders forming the support for the bearings of the shafts and drums of the machine.

S denotes the mast or shears, erected on the end of the machine, and carrying on their upper end the pulleys N and 0, over which the drill-rope R and slush-pump rope R are extended. These shears I hinge to the top of the frame B in such a manner as to allow them to be swung over and down onto the frameB, as illustrated in Fig. 1 of the drawings, thereby placing them in a convenient position for transportation when not in use. The foot of the shears is extended to the base A and adjustably secured thereto, as hereinafter described.

E E are braces hinged to the side of theupper portion of the shears, and when erected the foot of said braces rest on the rear end of the girder D, and are detachably secured thereto, so that they can be folded close to the side of the shears when laid down in the manner aforesaid.

Across the base A is journaled a shaft, F, on which is wound a rope, B, one end of which is connected to the foot of the shears S. By means of a crank, g, on the shaft F the latter can be rotated to wind up the rope R, and thereby draw the foot of the shears against the foot of the frame 13, and thus raise the shears to their upright position, as shown in Fig. 2 of the drawings. Adog, g, pivoted on the frame, engages a ratchet, f, on the shaft and prevents the reverse motion thereof, thus maintaining the rope R wound upon the shaft F.

a is the shaft or drum on which the drillrope R is wound, said shaft being provided on the end with aspur-wheel, 1), serving as heads for the drum. A shaft, a, arranged parallel to the shaft a, is provided with two pinions, b, meshing in thegears or spur-wheels B). One end of the shaft a is provided with a handcrank, c, for transmitting motion to the shaft a,to wind up the drill-rope R,when required, for raising the drill connected to the said rope, the drill being lowered by releasing the crank, the weight of the drill drawing the rope off the shaft a, and the run of the rope being controlled by means of a brake-pulley, h, at-

tached to the shaft 0, and a brake-lever, h,

pivoted to the frame-work and bearing on the periphery of the brake-pulley. To the opposite end of the shaft a is attached a ratchetwheel, 70, with which engages a dog, 70, for the purpose of preventing the reverse motion of the shaft a and the resultant unwinding of the rope during the operation of themachine, said dog being thrown out of engagement with the ratchet when the rope R is to be given out to lower the drill.

' In order to obtain better control of the movement of the two shafts a a in the operation of giving out the rope,as aforesaid, I attach to the shaft or a pinion, 6, across which is arranged a worm-gear, e, which is pivoted to an oscillatory bearing in the form of a shaft, 0 journaled in boxes on the sides of the machine-frame. The free end of the wormshaft is extended to the front end of the machine, so as to be convenient of access by the operator of the machine, and passes through a yoke or vertical guide, 2, which maintains the worm-shaft in line, and at the same time allows it to be raised out of connection with the pinion e,when desired, to afford free movement to the shafts a a. worm-shaft is provided with a hand-wheel by which to turn it.

In the operation of letting out the drillrope for lowering the drill into the well, the worm e is thrown in gear with the pinion e, and by means of the hand-wheel thereof the operator controls the movement of the wormshaft, and thus, also, the movement of the shafts a a.

At the outer side of the ratchet -wheel k is a sprocket-wheel, 71 which is mounted loosely on the shaft a, and back of the sprocket-wheel is a clutch, p, which slides on a spline on the shaft, and is adapted to engage or interlock with the side of the sprocketwheel, the arrangement of said clutch being so common as to not require special illustration in this case. It may, however, be seen in Figs. 5 and 6 of the drawings.

By means of a lever, g, pivoted on the side of the wooden frame of the machine,the clutch can be thrown in and out of connection with the sprocket-wheel. The latter is connected by an endless chain, m,with another sprocketwheel, L, hereinafter described, and by throwing the clutch into engagement with the sprocket-wheel h" the drum or shaft a can be revolved to wind up the rope R and raise the drill by the motor of the machine.

H represents the lever or levers which, in conjunction with the cams G G, impart the dropping or plunging action to the drill when in operation, said action being due to the rope B being extended from the drum or shafta to the sheave d on the free end of the lever H, and thence over a sheave on the upper end of the shears S to the drill, and the sudden re- The free end of the lease of the same allowing the drill to drop. The lever H, I hinge on the frame of the machine in such relative position as to bring the hinged end of the lever into proximity to and as near as possiblein the same horizontal plane as the rope-drum a. thereby obtaining a constant bearing of the rope R on the foot of the lever during the movement of the lever, and thereby leaving the sheave d, which is pivoted near the free end of said lever and carries the rope R,dormant onits axis during the movement of the lever, whereas in other analogousdrilling-machines the aforesaid lever has been so arranged that the motion of the lever produced an oscillating motion of the sheave d, and consequently more or less wear and abrasion of the rope and sheave.

In order :to bring the sheave d as near as possible to the under side of the lever H, I construct the lever of two parallel bars or scantlings, properly braced and tied together, with a space between them forming a longitudinal slot,n, in which the sheave d is pivoted by a pin passing transversely through the lever and sheave.

In the operation of a single cam G pressing on a roller in the center of the lever H, as in other machines, it has been found that more or less lateral strain was produced on the lever and on the shaft to which the cam is attached. To obviate this defect, I now employ two cams, G G, which are exact counterparts of each other, and are arranged to bear on the lever H simultaneously and respectively at opposite sides of the sheave d,as illustrated in Fig. 3 of the drawings. The two cams G G are attached to a counter-shaft, 0, which is. also provided with a gear-wheel, P, in which meshes a pinion, P, on the driving-shaft o, the latter being provided with a pulley, M, which,-by belt-connection with the drivingpulley of an engine, transmits motion to the machine. In the revolution of the countershaft 0 the cams G G are caused to depress the lever H with gradually-accelerated speed until the ends of the cams are drawn away from the end of the lever. The depression of the lever causes a draft on the rope R, and thereby raises the drill,and the release of the lever from the cams allows the drill to drop and produce the requisite stroke thereof.

It represents the rope which is connected to the slush-pump U for lowering and raising the same in the well, said rope passing overa sheave, O, on the upper part of the shears in the usual manner, and thence extends to and is connected to a drum, K, which is mounted in bearings or boxes attached to the upper or forward end of the side braces, G O. The journal-bearing Z of one of the boxes M is elongated to allow the drum to swing laterally. The journal which lies in the aforesaid bearing projects at the outside of the box, and with the protruding end is connected a lever, V, which is fulcrumed on the frame of the machine. A pulley, L, on the end of the drum K is connected by a belt, J, with a pulley, T, on the counter-shaft 0. Said belt is of such length that the aforesaid lateral swinging of the drum K will tighten and slacken the belt; hence by proper manipulation of the lever U, connected with the drum, the latter can be set in motion to wind up the slushpump rope R and raise the slush-pump out of the well; or the belt can be slackened so as to allow the rope to unwind from the drum and the pump to descend into the well,as may be desired.

0' represents a hook projecting from the under side of the lever H, and Z denotes a latch in the form of a balyextended across the under side of the frame A and pivoted to one side thereof. To the opposite end of the said latch is connected a rod, 3, which is extended forward and connected to a lever, 4, pivoted to the front end of the machine.

When it is desired to stop the operation of the drill, the latch is, by means of the lever 4, thrown in position to engage the hooks r during the descent of the lever H, and thus arrest the ascent of the latter. The lever H is with equal facility released to resume the drilling operation by the manipulation of the lever 4.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the lever H, composed of two bars carrying between them the sheave cl, the two cams G G, bearing on said lever respectively at opposite sides of the sheave, substantially as described and shown.

2. The combination, with the lever Hl,of the hook r and latch t, substantially as and for 'WILLIAM E. BROWVN. [L S.]

\Vitnesses:

FREDERICK H. GIBBS, VVM. O. RAYMOND. 

